Engineer&#39;s brake-valve



J. W. BIN'GLEY.. ENGINEERS BRAKE VALVE.' APPLxcATloN FILED N0v.22,1916.l

Patented Sept. 21, 1920.

JOHN W. BINGLEY. 0E' XVATEE'IWWN, NEW YORK.

ENGINEERS BRAKE-VALVE.

specification 0f Letters raient.

Application filed November 22, 1916. Serial No. 132,873.

T o all vwhom t may concern.'

.Be it known tliat il, JonN XV. BiNoLuY, a ycitizen of the' UnitedStates.y residing at Watertown, in the county ot Je'erson and 'State oiNew York, have invented certain new and useful Improvements in EngineersBrake-Valves, of which the following is a specification.

This invention relates to air brakes and particularly to en ineers brakevalves.

The object of te invention is to provide an improved type of valveequipped with a pressure motor so related to the rotary valve forming apart oi' the usual engineer-s brake valve as to move said rotary valveto Service application position, and then leave it free to b e moved Itoemergency position by hand. Another feature of the invention is the'coni plete freedom of the engineers valve from said pressure motor whenthe latter is not actuated.

The device is particularly adapted 'for use in safety stop mechanismsand is claimed in combination with such a system in my copendingapplication, Serial No. 132,872 tiled November 22, 1916. The claims ofthe present a p plication are acordingly restricted to thc valve andmotor construct-ion.

In tlie drawings, which' illustrate a preferred embodiment of theinvention Figure 1 is a plan view of an engineers valve with the motorslioivn in longitudinal axial section, the valve being in releaseposition;

Fig. 2 is a similar View showing the valve -moved to service applicationposition .by the motor, and

Fig. 3 is an elevation of the valve with the motor shown in transversesection.

- The invention is intended primarily tor use With valvesof theequalizing discharge type, having the usual functions corresponding torelease, running, holdingf -Jflapf service and emergency positions,

but is not confined thereto.

A valve of this 'type is indicated generally in the drawings, but as4the details of its internal construction are familiar and subject toconsiderable variation they are not illustrated. 'y

A part of the valve casing is illustratedat 5, the cap at 6.y the handleat?, the handle detent at 8 and the notched detent sector at 9. The cap6 carries. a boss 1() to ivhicli is bolted a horizontal cylinder 11.This has a head .12, and al tapped connection for the pressure fluidpipe 13 leading to a head-end port 145. p v

A. piston 15 is slidably mounted in the vcylinder` il and makes areasonably close fit therein. A slight leakage around the piston isusually provided for, less than the capacity oi the port 14, so thatpressure will he relieved behind piston 15 When the supply to port 14 iscut ofi', Without the provision of a special exhaust valve. A vent port1G vents such leakageA and relieves all pressure opposition to themotion of the piston away from the head end. i

The piston abuts against, but is not connected to a rod 1'? slidablymounted inthe end ot cylinder 11, and this rod carries a rack 18 whichis guided ina guide Wayl19 formed in the side of cylinder 11l so as-tohave a longitudinal sliding movement. The rack l8-meshesvvith a sectorgear 20 formed on the handle 7. A thrustspriiig 21' is provided. to takeup lost motion and-"insure a close meshing of the rack;A and gear.

raient-ea. sept. ai, reso# i The handle 7 operates the usual rotary i.

tions are Well understood, and obviously my invention may be used withvalves having more or fewer positions, such valves being also ifamiliarin this art. I

`When pressure is admitted behind piston 15 this will loe forced forwardto the limit of its travel. This moves the rod 17 and rack 18 outwardand `by rotatingr the gear 20 moves the valve to service position, theparts being so designed that the piston 15 will have completed 'itstravel vvlien the valve has moved this tar. The valve is then tree to hemoved manually to emergency position. AfterV pressure has been releasedfrom cylinder ll'the handle 7 maybe moved to release position. y Thisrestores'the piston 1b to the inner end of its travel leaving tliehandle 7 tree Jfor manual operation throughout its entire range.

rllhe device is available for use in a Wide range of safety stopmechanisms and is subject to modification to suit particular condi:

connections' might, be 'differently i'pgjopor: tioned with reference tothe'valve so "as to move the latter through its-entire travel ory anydesired part thereof. l Particular. "idvantage, however, resides in thefeature of moving the valve. to service application posi tion' and thenleaving it free to be moved by lhand 4to emergency position, movement inthe reverse direction, past service position being at the same timeprecluded; Such action produces a rela-tively quick stop, and

docs not interfere .with emergency-applical tions. The directactuation'ofI the englneers valve by a safety stop' mechanism precludesany lcounteraction of the stop mechanism through manipulation of theengineers .Having thus described my invention what I claim is :---l

`l. The combination of an engineers brake valye; a pressure cylinder;means for conducting and releasing pressure to and from .said cylinder;a free piston in said cylinder;

and a rod connected With said valve and capable of being moved by saidpiston. in one direction only.

2. yThe l,combination of an engineers brake ducting .and releasingpressure to and from said cylinder; a free piston in said cylinder;

y and a rod adapted to be engaged and moved .by said piston and gearedto said valve.

3. The combination of an engineers brake Vvalve havlng a,cas1ng; apressure cylinder movable cap mounted on ysaid casing; a free pistoninsald cylinder; a rod guided inv one end of :said cylinder and adapted tobe engaged and 5. The combination of an engineers brake valve having acasing formed with a re:v

movable cap, and havingv an operating handle; al valve actuating vmotormounted on and supported by said cap; and a gear vmounted on said handleand serving as anv operative connection between said motor and valve.

6. Th'e combination of .an engineers brake l c lValve having a casingformed with a removable cap, said valve having an actuating handle; apressure cylinder mounted onsaid cap; a free piston in 'said cylinder; arod guided in saidcylinder and adapted to be engaged and movedv by saidpiston; a rack carried by saidl rod; and va gear carried by said handleand meshing With said rack.

In testimony whereof Il have signed my name to this specification.

JOHN W. BIN GLEY.

